Advantech SOM-Express Design Guide
22 Chapter 2 SOM-Express Overview
Table 2.8 SOM-5780 Alternative Device Resources
Alternative Device Resources
COM1 3F8/IRQ4*, 2F8/IRQ3, 3E8/IRQ4, 2E8/IRQ3, Disable
COM2 3F8/IRQ4, 2F8/IRQ3*, 3E8/IRQ4, 2E8/IRQ3, Disable
LPT1 378/IRQ7*, 278/IRQ5, 3BC/IRQ7, Disable
* Default setting
2.3.2 SOM-5782 Resources
Table 2.9 SOM-5782 IRQ Resources
IRQ Description
0 (ISA) System timer
1 (ISA) Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
2 -
3 (ISA) Communications Port (COM2)
4 (ISA) Communications Port (COM1)
5 -
6 (ISA) Standard floppy disk controller
7 (ISA) ECP Printer Port (LPT1)
8 (ISA) System CMOS/real time clock
9 (ISA) Microsoft ACPI-Compliant System
10 -
11 (PCI) Intel(R) 82801G(ICH7 Family) SMBus Controller - 27DA
12 (ISA) PS/2 Compatible Mouse
13 (ISA) Numeric data processor
14 (ISA) Primary IDE Channel
15 (ISA) Secondary IDE Channel
16 (PCI) Intel(R) 82801G(ICH7 Family) PCI Express Root Port - 27D0
16 (PCI) Intel(R) 82801G(ICH7 Family) USB Universal Host Controller – 27CB
16 (PCI) Mobile Intel(R) 945GM Express Chipset Family
17 (PCI) Intel(R) PRO/1000 PL Network Connection
18 (PCI) Intel(R) 82801G(ICH7 Family) USB Universal Host Controller – 27CA
19 (PCI) Intel(R) 82801G(ICH7 Family) PCI Express Root Port - 27D6
19 (PCI) Intel(R) 82801G(ICH7 Family) USB Universal Host Controller – 27C9
19 (PCI) Intel(R) 82801GR/GH/GHM (ICH7 Family) PCI Express Root Port – 27E2
23 (PCI) Intel(R) 82801G(ICH7 Family) USB Universal Host Controller – 27CB
23 (PCI) Intel(R) 82801G(ICH7 Family) USB2 Enhanced Host Controller – 27CC
Table 2.10 SOM-5782 DMA Resources
DMA Description
0 -
1 -
2 Standard floppy disk controller
3 -
4 Direct memory access controller
5 -
6 -
7 -
